Function.create

There is no standardized way to create a new function with a prototype which
is not Function.prototype.
I propose Function.create
/*
Creates a new function whose prototype is proto.
The function body is the same as the function fbody.
The hash of propertydescriptors props is passed to defineproperties
just like
Object.create does.
*/
Function.create = (function() {
var functionBody = function _getFunctionBody(f) {
return f.toString().replace(/.+\{/, "").replace(/\}$/, "");
};
var letters = "abcdefghijklmnopqrstuvwxyz".split("");
return function _create(proto, fbody, props) {
var parameters = letters.slice(0, fbody.length);
parameters.push(functionBody(fbody));
var f = Function.apply(this, parameters);
f.__proto__ = proto;
Object.defineProperties(f, props);
return f;
};
})();
This is the same as Object.create except the second parameter is a function.
It will create a new function whose function body is the same as the
function passed in.
I don't believe this is possible to do in ES5 without __proto__
jsfiddle showing an example. <http://jsfiddle.net/8CrqR/>
Related stackoverflow
question<http://stackoverflow.com/questions/7539148/how-do-i-inherit-functions>
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